[OpenAFS] fileserver not registering correctly

[Jeffrey Hutzelman]

On Monday, August 30, 2004 12:30:33 -0400 Derrick J Brashear 
<shadow@dementia.org> wrote:

> On Mon, 30 Aug 2004, Erwin Broschinski wrote:
>
>> Mon Aug 30 12:17:50 2004 The following fileserver is being registered in
>> the VLDB:
>> Mon Aug 30 12:17:50 2004 allbetter checking
>>      [129.132.239.19]
>>   It will replace the following existing entry in the VLDB (same uuid):
>>      entry 3: [129.132.115.36]
>> -------
>>
>> How is it possible, these have the same uuid?
>
> someone copied the uuid file when creating the new server, i'd guess, but
> i thought some mechanism stopped you from screwing yourself like that.

Only if both IP addresess were already registered in the VLDB as belonging 
to different servers.  The vlserver won't let you "steal" another 
registered server's IP address (though you can take on its identity, if you 
have no sysid file).  However, it can't distinguish what happened to Erwin 
from what happens when you legitimately renumber a server.

-- Jeffrey T. Hutzelman (N3NHS) <jhutz+@cmu.edu>
   Sr. Research Systems Programmer
   School of Computer Science - Research Computing Facility
   Carnegie Mellon University - Pittsburgh, PA